Add workspace-shadow {} config to overview {}

4 files changed, 103 insertions, 26 deletions

diff --git a/niri-config/src/lib.rs b/niri-config/src/lib.rs
index 263ab7a7..8bb069c6 100644
--- a/niri-config/src/lib.rs
+++ b/niri-config/src/lib.rs
@@ -755,6 +755,49 @@ pub struct ShadowOffset {
 }
 
 #[derive(knuffel::Decode, Debug, Clone, Copy, PartialEq)]
+pub struct WorkspaceShadow {
+    #[knuffel(child)]
+    pub off: bool,
+    #[knuffel(child, default = Self::default().offset)]
+    pub offset: ShadowOffset,
+    #[knuffel(child, unwrap(argument), default = Self::default().softness)]
+    pub softness: FloatOrInt<0, 1024>,
+    #[knuffel(child, unwrap(argument), default = Self::default().spread)]
+    pub spread: FloatOrInt<-1024, 1024>,
+    #[knuffel(child, default = Self::default().color)]
+    pub color: Color,
+}
+
+impl Default for WorkspaceShadow {
+    fn default() -> Self {
+        Self {
+            off: false,
+            offset: ShadowOffset {
+                x: FloatOrInt(0.),
+                y: FloatOrInt(20.),
+            },
+            softness: FloatOrInt(120.),
+            spread: FloatOrInt(20.),
+            color: Color::from_rgba8_unpremul(0, 0, 0, 0x70),
+        }
+    }
+}
+
+impl From<WorkspaceShadow> for Shadow {
+    fn from(value: WorkspaceShadow) -> Self {
+        Self {
+            on: !value.off,
+            offset: value.offset,
+            softness: value.softness,
+            spread: value.spread,
+            draw_behind_window: false,
+            color: value.color,
+            inactive_color: None,
+        }
+    }
+}
+
+#[derive(knuffel::Decode, Debug, Clone, Copy, PartialEq)]
 pub struct TabIndicator {
     #[knuffel(child)]
     pub off: bool,
@@ -1269,6 +1312,8 @@ pub struct Overview {
     pub zoom: FloatOrInt<0, 1>,
     #[knuffel(child, default = Self::default().backdrop_color)]
     pub backdrop_color: Color,
+    #[knuffel(child, default)]
+    pub workspace_shadow: WorkspaceShadow,
 }
 
 impl Default for Overview {
@@ -1276,6 +1321,7 @@ impl Default for Overview {
         Self {
             zoom: FloatOrInt(0.5),
             backdrop_color: DEFAULT_BACKDROP_COLOR,
+            workspace_shadow: WorkspaceShadow::default(),
         }
     }
 }
@@ -4611,6 +4657,29 @@ mod tests {
                     b: 0.15,
                     a: 1.0,
                 },
+                workspace_shadow: WorkspaceShadow {
+                    off: false,
+                    offset: ShadowOffset {
+                        x: FloatOrInt(
+                            0.0,
+                        ),
+                        y: FloatOrInt(
+                            20.0,
+                        ),
+                    },
+                    softness: FloatOrInt(
+                        120.0,
+                    ),
+                    spread: FloatOrInt(
+                        20.0,
+                    ),
+                    color: Color {
+                        r: 0.0,
+                        g: 0.0,
+                        b: 0.0,
+                        a: 0.4392157,
+                    },
+                },
             },
             environment: Environment(
                 [
diff --git a/src/layout/workspace.rs b/src/layout/workspace.rs
index 58a2d40f..fe9ce585 100644
--- a/src/layout/workspace.rs
+++ b/src/layout/workspace.rs
@@ -3,8 +3,7 @@ use std::rc::Rc;
 use std::time::Duration;
 
 use niri_config::{
-    CenterFocusedColumn, CornerRadius, FloatOrInt, OutputName, PresetSize,
-    Workspace as WorkspaceConfig,
+    CenterFocusedColumn, CornerRadius, OutputName, PresetSize, Workspace as WorkspaceConfig,
 };
 use niri_ipc::{ColumnDisplay, PositionChange, SizeChange};
 use smithay::backend::renderer::gles::GlesRenderer;
@@ -236,17 +235,6 @@ impl<W: LayoutElement> Workspace<W> {
             options.clone(),
         );
 
-        let shadow_config = niri_config::Shadow {
-            on: true,
-            offset: niri_config::ShadowOffset {
-                x: FloatOrInt(0.),
-                y: FloatOrInt(20.),
-            },
-            softness: FloatOrInt(120.),
-            spread: FloatOrInt(20.),
-            ..Default::default()
-        };
-
         Self {
             scrolling,
             floating,
@@ -256,7 +244,7 @@ impl<W: LayoutElement> Workspace<W> {
             transform: output.current_transform(),
             view_size,
             working_area,
-            shadow: Shadow::new(shadow_config),
+            shadow: Shadow::new(niri_config::Shadow::from(options.overview.workspace_shadow)),
             output: Some(output),
             clock,
             base_options,
@@ -301,17 +289,6 @@ impl<W: LayoutElement> Workspace<W> {
             options.clone(),
         );
 
-        let shadow_config = niri_config::Shadow {
-            on: true,
-            offset: niri_config::ShadowOffset {
-                x: FloatOrInt(0.),
-                y: FloatOrInt(20.),
-            },
-            softness: FloatOrInt(120.),
-            spread: FloatOrInt(20.),
-            ..Default::default()
-        };
-
         Self {
             scrolling,
             floating,
@@ -322,7 +299,7 @@ impl<W: LayoutElement> Workspace<W> {
             original_output,
             view_size,
             working_area,
-            shadow: Shadow::new(shadow_config),
+            shadow: Shadow::new(niri_config::Shadow::from(options.overview.workspace_shadow)),
             clock,
             base_options,
             options,
@@ -403,6 +380,9 @@ impl<W: LayoutElement> Workspace<W> {
             options.clone(),
         );
 
+        let shadow_config = niri_config::Shadow::from(options.overview.workspace_shadow);
+        self.shadow.update_config(shadow_config);
+
         self.base_options = base_options;
         self.options = options;
     }
diff --git a/wiki/Configuration:-Miscellaneous.md b/wiki/Configuration:-Miscellaneous.md
index 5f4a8e7c..ee78cebd 100644
--- a/wiki/Configuration:-Miscellaneous.md
+++ b/wiki/Configuration:-Miscellaneous.md
@@ -26,6 +26,14 @@ cursor {
 overview {
     zoom 0.5
     backdrop-color "#262626"
+
+    workspace-shadow {
+        // off
+        softness 120
+        spread 20
+        offset x=0 y=20
+        color "#00000070"
+    }
 }
 
 clipboard {
@@ -178,6 +186,24 @@ overview {
 }
 ```
 
+#### `workspace-shadow`
+
+Control the shadow behind workspaces visible in the overview.
+
+Settings here mirror the normal [`shadow` config in the layout section](./Configuration:-Layout.md#shadow), so check the documentation there.
+
+Keep in mind that workspace shadows are configured for the full-screen workspace size, then zoomed out together with the workspace.
+Practically, this means that you'll want bigger spread, offset, and softness compared to window shadows.
+
+```kdl
+// Disable workspace shadows in the overview.
+overview {
+    workspace-shadow {
+        off
+    }
+}
+```
+
 ### `clipboard`
 
 <sup>Since: 25.02</sup>
diff --git a/wiki/Overview.md b/wiki/Overview.md
index 57629c2e..c907eb67 100644
--- a/wiki/Overview.md
+++ b/wiki/Overview.md
@@ -29,6 +29,8 @@ https://github.com/user-attachments/assets/b76d5349-aa20-4889-ab90-0a51554c789d
 
 ### Configuration
 
+See the full documentation for the `overview {}` section [here](./Configuration:-Miscellaneous.md#overview).
+
 You can set the zoom-out level like this:
 
 ```kdl